I've been neutral tagging accounts that appear to have been bought or hacked for quite some time. In addition to discarding their prior post history, their prior trust feedback should disregarded, as well. I also have no problem with people who want to red tag bought accounts so longer as it can be absolutely proven that the account was purchased (or hacked). It will continue to be a problem for so long as the forum has signature campaigns (or even an Altcoin ANN section for that matter).